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<body class="manpage">
<div id="header">
<h1>
nvme-get-feature(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nvme-get-feature -
   Gets an NVMe feature, returns applicable results
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>nvme get-feature</em> &lt;device&gt; [--namespace-id=&lt;nsid&gt; | -n &lt;nsid&gt;]
                        [--feature-id=&lt;fid&gt; | -f &lt;fid&gt;]
                        [--uuid-index=&lt;uuid-index&gt; | -U &lt;uuid_index&gt;]
                        [--data-len=&lt;data-len&gt; | -l &lt;data-len&gt;]
                        [--sel=&lt;select&gt; | -s &lt;select&gt;]
                        [--raw-binary | -b] [--cdw11=&lt;cdw11&gt; | -c &lt;cdw11&gt;]
                        [--human-readable | -H] [--changed | -C]
                        [--output-format=&lt;fmt&gt; | -o &lt;fmt&gt;] [--verbose | -v]
                        [--timeout=&lt;timeout&gt; | -t &lt;timeout&gt;]</pre>
<div class="attribution">
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>Submits an NVMe Get Feature admin command and returns the applicable
results. This may be the feature&#8217;s value, or may also include a feature
structure if the feature requires it (ex: LBA Range Type).</p></div>
<div class="paragraph"><p>The &lt;device&gt; parameter is mandatory and may be either the NVMe character
device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).</p></div>
<div class="paragraph"><p>On success, the returned feature&#8217;s structure (if applicable) may be
returned in one of several ways depending on the option flags; the
structure may parsed by the program and printed in a readable format
if it is a known structure, displayed in hex, or the raw buffer may be
printed to stdout for another program to parse.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
-n &lt;nsid&gt;
</dt>
<dt class="hdlist1">
--namespace-id=&lt;nsid&gt;
</dt>
<dd>
<p>
        Retrieve the feature for the given nsid. This is optional and
        most features do not use this value.
</p>
</dd>
<dt class="hdlist1">
-f &lt;fid&gt;
</dt>
<dt class="hdlist1">
--feature-id=&lt;fid&gt;
</dt>
<dd>
<p>
        The feature id to send with the command. Value provided should
        be in hex.
</p>
<div class="tableblock">
<table rules="all"
width="100%"
frame="border"
cellspacing="0" cellpadding="4">
<col width="50%" />
<col width="50%" />
<tbody>
<tr>
<td align="left" valign="top"><p class="table">Value</p></td>
<td align="left" valign="top"><p class="table">Definition</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x01 | <em>arbitration</em></p></td>
<td align="left" valign="top"><p class="table">Arbitration</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x02 | <em>power-mgmt</em></p></td>
<td align="left" valign="top"><p class="table">Power Management</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x03 | <em>lba-range</em></p></td>
<td align="left" valign="top"><p class="table">LBA Range Type</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x04 | <em>temp-thresh</em></p></td>
<td align="left" valign="top"><p class="table">Temperature Threshold</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x05 | <em>err-recovery</em></p></td>
<td align="left" valign="top"><p class="table">Error Recovery</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x06 | <em>volatile-wc</em></p></td>
<td align="left" valign="top"><p class="table">Volatile Write Cache</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x07 | <em>num-queues</em></p></td>
<td align="left" valign="top"><p class="table">Number of Queues</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x08 | <em>irq-coalesce</em></p></td>
<td align="left" valign="top"><p class="table">Interrupt Coalescing</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x09 | <em>irq-config</em></p></td>
<td align="left" valign="top"><p class="table">Interrupt Vector Configuration</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0a | <em>write-atomic</em></p></td>
<td align="left" valign="top"><p class="table">Write Atomicity Normal</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0b | <em>async-event</em></p></td>
<td align="left" valign="top"><p class="table">Asynchronous Event Configuration</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0c | <em>auto-pst</em></p></td>
<td align="left" valign="top"><p class="table">Autonomous Power State Transition</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0d | <em>host-mem-buf</em></p></td>
<td align="left" valign="top"><p class="table">Host Memory Buffer</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0e | <em>timestamp</em></p></td>
<td align="left" valign="top"><p class="table">Timestamp</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x0f | <em>kato</em></p></td>
<td align="left" valign="top"><p class="table">Keep Alive Timer</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x10 | <em>hctm</em></p></td>
<td align="left" valign="top"><p class="table">Host Controlled Thermal Management</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x11 | <em>nopsc</em></p></td>
<td align="left" valign="top"><p class="table">Non-Operational Power State Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x12 | <em>rrl</em></p></td>
<td align="left" valign="top"><p class="table">Read Recovery Level Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x13 | <em>plm-config</em></p></td>
<td align="left" valign="top"><p class="table">Predictable Latency Mode Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x14 | <em>plm-window</em></p></td>
<td align="left" valign="top"><p class="table">Predictable Latency Mode Window</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x15 | <em>lba-sts-interval</em></p></td>
<td align="left" valign="top"><p class="table">LBA Status Information Report Interval</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x16 | <em>host-behavior</em></p></td>
<td align="left" valign="top"><p class="table">Host Behavior Support</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x17 | <em>sanitize</em></p></td>
<td align="left" valign="top"><p class="table">Sanitize Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x18 | <em>endurance-evt-cfg</em></p></td>
<td align="left" valign="top"><p class="table">Endurance Group Event Configuration</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x19 | <em>iocs-profile</em></p></td>
<td align="left" valign="top"><p class="table">I/O Command Set Profile</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1a | <em>spinup-control</em></p></td>
<td align="left" valign="top"><p class="table">Spinup Control</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1b | <em>power-loss-signal</em></p></td>
<td align="left" valign="top"><p class="table">Power Loss Signaling Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1c | <em>perf-characteristics</em></p></td>
<td align="left" valign="top"><p class="table">Performance Characteristics</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1d | <em>fdp</em></p></td>
<td align="left" valign="top"><p class="table">Flexible Data Placement</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1e | <em>fdp-events</em></p></td>
<td align="left" valign="top"><p class="table">FDP Events</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x1f | <em>ns-admin-label</em></p></td>
<td align="left" valign="top"><p class="table">Namespace Admin Label</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x20 | <em>key-value</em></p></td>
<td align="left" valign="top"><p class="table">Key Value Configuration</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x21 | <em>ctrl-data-queue</em></p></td>
<td align="left" valign="top"><p class="table">Controller Data Queue</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x78 | <em>emb-mgmt-ctrl-addr</em></p></td>
<td align="left" valign="top"><p class="table">Embedded Management Controller Address</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x79 | <em>host-mgmt-agent-addr</em></p></td>
<td align="left" valign="top"><p class="table">Host Management Agent Address</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x7d | <em>enh-ctrl-metadata</em></p></td>
<td align="left" valign="top"><p class="table">Enhanced Controller Metadata</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x7e | <em>ctrl-metadata</em></p></td>
<td align="left" valign="top"><p class="table">Controller Metadata</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x7f | <em>ns-metadata</em></p></td>
<td align="left" valign="top"><p class="table">Namespace Metadata</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x80 | <em>sw-progress</em></p></td>
<td align="left" valign="top"><p class="table">Software Progress Marker</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x81 | <em>host-id</em></p></td>
<td align="left" valign="top"><p class="table">Host Identifier</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x82 | <em>resv-mask</em></p></td>
<td align="left" valign="top"><p class="table">Reservation Notification Mask</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x83 | <em>resv-persist</em></p></td>
<td align="left" valign="top"><p class="table">Reservation Persistence</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x84 | <em>write-protect</em></p></td>
<td align="left" valign="top"><p class="table">Namespace Write Protection Config</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0x85 | <em>bp-write-protect</em></p></td>
<td align="left" valign="top"><p class="table">Boot Partition Write Protection Config</p></td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt class="hdlist1">
-s &lt;select&gt;
</dt>
<dt class="hdlist1">
--sel=&lt;select&gt;
</dt>
<dd>
<p>
        Select (SEL): This field specifies which value of the attributes
        to return in the provided data:
</p>
<div class="tableblock">
<table rules="all"
width="100%"
frame="border"
cellspacing="0" cellpadding="4">
<col width="50%" />
<col width="50%" />
<tbody>
<tr>
<td align="left" valign="top"><p class="table">Select</p></td>
<td align="left" valign="top"><p class="table">Description</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">0</p></td>
<td align="left" valign="top"><p class="table">Current</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">1</p></td>
<td align="left" valign="top"><p class="table">Default</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">2</p></td>
<td align="left" valign="top"><p class="table">Saved</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">3</p></td>
<td align="left" valign="top"><p class="table">Supported capabilities</p></td>
</tr>
<tr>
<td align="left" valign="top"><p class="table">4-7</p></td>
<td align="left" valign="top"><p class="table">Reserved</p></td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt class="hdlist1">
-U &lt;uuid-index&gt;
</dt>
<dt class="hdlist1">
--uuid-index=&lt;uuid-index&gt;
</dt>
<dd>
<p>
        UUID Index of the feature
</p>
</dd>
<dt class="hdlist1">
-l &lt;data-len&gt;
</dt>
<dt class="hdlist1">
--data-len=&lt;data-len&gt;
</dt>
<dd>
<p>
        The data length for the buffer returned for this feature. Most
        known features do not use this value. The exception is LBA
        Range Type
</p>
</dd>
<dt class="hdlist1">
-c &lt;cdw11&gt;
</dt>
<dt class="hdlist1">
--cdw11=&lt;cdw11&gt;
</dt>
<dd>
<p>
        The value for command dword 11, if applicable.
</p>
</dd>
<dt class="hdlist1">
-b
</dt>
<dt class="hdlist1">
--raw-binary
</dt>
<dd>
<p>
        Print the raw feature buffer to stdout if the feature returns
        a structure.
</p>
</dd>
<dt class="hdlist1">
-H
</dt>
<dt class="hdlist1">
--human-readable
</dt>
<dd>
<p>
        This option will parse and format many of the bit fields
        into human-readable formats.
</p>
</dd>
<dt class="hdlist1">
-C
</dt>
<dt class="hdlist1">
--changed
</dt>
<dd>
<p>
        This option will show feature changed.
</p>
</dd>
<dt class="hdlist1">
-o &lt;fmt&gt;
</dt>
<dt class="hdlist1">
--output-format=&lt;fmt&gt;
</dt>
<dd>
<p>
        Set the reporting format to <em>normal</em>, <em>json</em> or <em>binary</em>. Only one
        output format can be used at a time.
</p>
</dd>
<dt class="hdlist1">
-v
</dt>
<dt class="hdlist1">
--verbose
</dt>
<dd>
<p>
        Increase the information detail in the output.
</p>
</dd>
<dt class="hdlist1">
-t &lt;timeout&gt;
</dt>
<dt class="hdlist1">
--timeout=&lt;timeout&gt;
</dt>
<dd>
<p>
        Override default timeout value. In milliseconds.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Retrieves the feature for Number of Queues, or feature id 7:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme get-feature /dev/nvme0 -f 7</code></pre>
</div></div>
</li>
<li>
<p>
The following retrieves the feature for the LBA Range Type, which
implicitly requires a buffer and will be printed to the screen in human
readable format:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme get-feature /dev/nvme0 -f 3</code></pre>
</div></div>
</li>
<li>
<p>
Retrieves the feature for the some vendor specific feature and
specifically requesting a buffer be allocate for this feature, which
will be displayed to the user in as a hex dump:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme get-feature /dev/nvme0 -f 0xc0 -l 512</code></pre>
</div></div>
<div class="paragraph"><p>Get feature with UUID index</p></div>
</li>
</ul></div>
<div class="listingblock">
<div class="content">
<pre><code># nvme get-feature /dev/nvme0 -f 0xc0 -l 512 -U 0x1</code></pre>
</div></div>
<div class="ulist"><ul>
<li>
<p>
The following retrieves the feature for the LBA Range Type, which
implicitly requires a buffer and will be saved to a file in its raw
format:
</p>
<div class="listingblock">
<div class="content">
<pre><code># nvme get-feature /dev/nvme0 -f 3 --raw-binary &gt; lba_range.raw</code></pre>
</div></div>
<div class="paragraph"><p>It is probably a bad idea to not redirect stdout when using this mode.</p></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_nvme">NVME</h2>
<div class="sectionbody">
<div class="paragraph"><p>Part of the nvme-user suite</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2025-07-25 10:38:56 CEST
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